/Engine/Source/Runtime/InteractiveToolsFramework/Public/BaseGizmos/GizmoElementBase.h
Set mesh render state interact material attribute.
virtual void SetInteractMaterial ( [TWeakObjectPtr](API\Runtime\Core\UObject\TWeakObjectPtr)< [UMaterialInterface](API\Runtime\Engine\Materials\UMaterialInterface) > InInteractMaterial, bool InOverridesChildState )